﻿<%@CodePage="65001"%> 
<% 
Call Com_CreatValidCode("GetCode") 

Sub Com_CreatValidCode(pSN) 
    ' 禁止缓存 
    Response.Expires = -9999  
    Response.AddHeader "Pragma","no-cache" 
    Response.AddHeader "cache-ctrol","no-cache" 
    'Response.ContentType = "Image/BMP" 

    Randomize 

    Dim i, ii, iii 

    Const cOdds = 1 ' 杂点出现的机率 
    Const cAmount = 13 ' 文字数量 
    Const cCode = "0123456789+=?" 

    ' 颜色的数据(字符，背景) 
    Dim vColorData(1),vColorRandom(10) 
    'vColorData(0) = ChrB(Int(Rnd*155)+100) & ChrB(Int(Rnd*155)+100) & ChrB(Int(Rnd*155)+100) ' 蓝0，绿0，红0（黑色） 
    vColorRandom(0)=ChrB(150) & ChrB(0) & ChrB(0) 
    vColorRandom(1)=ChrB(0) & ChrB(150) & ChrB(0) 
    vColorRandom(2)=ChrB(0) & ChrB(0) & ChrB(150) 
    vColorRandom(3)=ChrB(0) & ChrB(50) & ChrB(150) 
    vColorRandom(4)=ChrB(150) & ChrB(50) & ChrB(0) 
    vColorRandom(5)=ChrB(150) & ChrB(0) & ChrB(150) 
    vColorRandom(6)=ChrB(150) & ChrB(100) & ChrB(10) 
    vColorRandom(7)=ChrB(150) & ChrB(40) & ChrB(120) 
    vColorRandom(8)=ChrB(150) & ChrB(0) & ChrB(250) 
    vColorRandom(9)=ChrB(100) & ChrB(100) & ChrB(100) 
    vColorRandom(10)=ChrB(50) & ChrB(50) & ChrB(50) 
    vColorData(0) = vColorRandom(0) 
    vColorData(1) = ChrB(250) & ChrB(250) & ChrB(255) '背景色 蓝250，绿236，红211（浅蓝色） 
    ' 随机产生字符 
    Dim vCode(6),vCodes,vCodeColors(6) 
    For i = 0 To 6 
        vCodeColors(i)=vColorRandom(Int(Rnd * 10)) 
    Next 
     
    vCode(0) = Int(Rnd*8)+1 
    vCode(1) = Int(Rnd*9) 
    vCode(2) = 10 
    vCode(3) = Int(Rnd*8)+1 
    vCode(4) = Int(Rnd*9) 
    vCode(5) = 11 
    vCode(6) = 12 
    Session(pSN) = vCode(0)*10+vCode(1)+vCode(3)*10+vCode(4) '记录入Session 
    ' 字符的数据 
    Dim vNumberData(12) 
    vNumberData(0) = "1110000111110111101111011110111101001011110100101111010010111101001011110111101111011110111110000111" 
    vNumberData(1) = "1111011111110001111111110111111111011111111101111111110111111111011111111101111111110111111100000111" 
    vNumberData(2) = "1110000111110111101111011110111111111011111111011111111011111111011111111011111111011110111100000011" 
    vNumberData(3) = "1110000111110111101111011110111111110111111100111111111101111111111011110111101111011110111110000111" 
    vNumberData(4) = "1111101111111110111111110011111110101111110110111111011011111100000011111110111111111011111111000011" 
    vNumberData(5) = "1100000011110111111111011111111101000111110011101111111110111111111011110111101111011110111110000111" 
    vNumberData(6) = "1111000111111011101111011111111101111111110100011111001110111101111011110111101111011110111110000111" 
    vNumberData(7) = "1100000011110111011111011101111111101111111110111111110111111111011111111101111111110111111111011111" 
    vNumberData(8) = "1110000111110111101111011110111101111011111000011111101101111101111011110111101111011110111110000111" 
    vNumberData(9) = "1110001111110111011111011110111101111011110111001111100010111111111011111111101111011101111110001111" 
    vNumberData(10) = "1111111111111101111111110111111111011111100000001111110111111111011111111101111111110111111111111111" 
    vNumberData(11) = "1111111111111111111111111111111000000001111111111111111111111000000001111111111111111111111111111111" 
    vNumberData(12) = "1110000111110011001111011110111111111011111111001111111001111111001111111111111111110011111111001111" 
     
    ' 输出图像文件头 
    Response.BinaryWrite ChrB(66) & ChrB(77) & ChrB(166) & ChrB(8) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) &_ 
    ChrB(0) & ChrB(0) & ChrB(54) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(40) & ChrB(0) &_ 
    ChrB(0) & ChrB(0) & ChrB(72) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(10) & ChrB(0) &_ 
    ChrB(0) & ChrB(0) & ChrB(1) & ChrB(0) 

    ' 输出图像信息头 
    Response.BinaryWrite ChrB(24) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(112) & ChrB(8) &_ 
    ChrB(0) & ChrB(0) & ChrB(18) & ChrB(11) & ChrB(0) & ChrB(0) & ChrB(18) & ChrB(11) &_ 
    ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) &_ 
    ChrB(0) & ChrB(0) 
    For i = 9 To 0 Step -1 ' 历经所有行 
        For ii = 0 To 6 ' 历经所有字 
            For iii = 1 To 10 ' 历经所有像素 
                ' 逐行、逐字、逐像素地输出图像数据 
                vColorData(0)=vCodeColors(ii) 
                If Rnd * 99 + 1 < cOdds Then ' 随机生成杂点 
                    Response.BinaryWrite vColorData(0) 
                Else 
                    Response.BinaryWrite vColorData(Mid(vNumberData(vCode(ii)), i * 10 + iii, 1)) 
                End If 
            Next 
        Next 
    Response.BinaryWrite vColorData(1) & vColorData(1) 
    Next 
End Sub 

%> 